Abstract：To explore the characteristics of dilemma of green signal countdown device based on driver reaction time, the calculating model of critical reaction time was constructed， and the dilemma zones were divided into three types based on the relationship between critical reaction time and reaction interval. The distribution intervals were determined, and the length calculation models were established. The actual values were calculated under different displays of green signal countdown device and different driver reaction times. The results indicate that the maximum length is 21.3 m when the countdown time is 10.00 s with travel speed of 35 km?h-1 and with acceleration and deceleration speeds of 1.0 m?s-2 and -1.5 m?s-2, respectively. The dilemma zone moves forward with the decreasing of countdown time, and the length of dilemma zone is increased with the increasing of reaction time at a certain countdown time.
沈家军, 黄雪强, 王笑笑, 曹淑. 驾驶者不同倒计时反应时间下交叉口两难区特性[J]. 江苏大学学报（自然科学版）, 2018, 39(5): 503-506.
SHEN Jia-Jun, HUANG Xue-Qiang, WANG Xiao-Xiao, CAO Shu. Dilemma zone characteristics of green signal countdown device at intersection based on driver reaction time[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2018, 39(5): 503-506.
2018, Vol. 39 
